In LEO satellite constellations, laser inter-satellite communication (ISC) with faultless tracking and precision-pointing is of utmost importance, as the satellites move at a speed of 27000 km/h and complete a full orbit every 90-120 minutes [1]}. This relative motion causes a significantly high Doppler shift at the receiver node and changes the frequency of the received signal. Because of this extremely high relative motion, it is almost impossible to create inter-satellite connectivity between multiple number of satellites. Furthermore, satellite vibrations and various noise sources, including shot noise, thermal noise, and cosmic dust, can cause deviation in the signal and misalignment occurs in laser ISCs [2]}.
